Thats nice. My kids handle all the incubator hatched chicks the same way. The love snuggling up in there hair. And my kids make perfect mama hen sounds, which gets the chicks all excited to feed or follow them around its cute.As far as training is concerned they are being trained to be held, touched, and to come when we snap our fingers or call to them. Where they are not pure I can't show them, However we want them to be handled daily so they wont attack people. They have been handled daily since they were hatched. And now at 2 weeks, they still come when called, and talk to us, use the kids as perches, and even mess with my daughters hair.
The chicks raised by mama hens are wild as can be. I still have some chickens at my parents house that I have never touched. They'd rather die trying to squeeze through a chain link fence than let me handle them. Its a travesty. lol